package collection;

import java.util.ArrayList;
import java.util.List;

/**
 *  List subList(int start,int end)
 *  获取当前集合中指定范围内的子集.两个参数为开始与结束的下标(含头不含尾)
 */
public class ListDemo3 {
    public static void main(String[] args) {
        List<Integer> list = new ArrayList<>();
        for (int i = 0;i < 10;i++){
            list.add(i);
        }
        System.out.println(list);
        //获取3-7
        List <Integer> subList = list.subList(3,8);
        System.out.println(subList);

        //将子集每个元素扩大十倍
        for (int i = 0;i<subList.size();i++){
            subList.set(i,subList.get(i)*10);
        }
        System.out.println(subList);
        /*
            对子集的操作就是对原集合对应元素的操作
         */
        System.out.println(list);

        //删除list集合中的2-8
        list.subList(2,9).clear();
        System.out.println(list);
    }
}